We propose a new admission control algorithm for GPRS/EGPRS cellular data networks, based on fuzzy inference. The admission decision is based on system parameters like the network load and users precedence, being expressed in the form of fuzzy if-then rules. Simulation results are presented for the fuzzy admission algorithm, using our model for a GPRS/EGPRS cell and a simplified simulation scen...

The General Packet Radio Service (GPRS) is currently being standardized by the European Telecommunications Standard Institute (ETSI) to extend the services provided by the Global System for Mobile Communications (GSM). GPRS is dedicated to support packet-oriented traffic, e.g. Internet traffic. Packet oriented transmission is by nature better suited to convey bursty traffic, as it is generated ...

This paper presents an efficient and accurate analytical model for the radio interface of the General Packet Radio Service (GPRS) in a GSM network. The model is utilized for investigating how many packet data channels should be allocated for GPRS under a given amount of traffic in order to guarantee appropriate quality of service. The presented model constitutes a continuous-time Markov chain. ...

0140-3664/$ see front matter 2008 Elsevier B.V. A doi:10.1016/j.comcom.2008.10.011 * Corresponding author. E-mail address: [email protected] (S.Y. Wa To obtain infotainment services (e.g., traffic, maps, accidents, weather, etc.) on the roads, vehicle drivers and back-seat passengers may want to use wide-area networks (e.g., GPRS) to download useful information from the Internet when need...

The paper deals with the special program utilization for testing of GPRS user data throughput in GSM. Block diagram of equipments interconnection for testing of dependence between user bit rate and carrier to interference ratio are introduced. The GPRS transmission was realized with help of base transceiver station, which is installed in laboratory on Institute of Radio Electronics, FEEC, Brno ...

Recently all major mobile network providers have introduced the General Packet Radio Service GPRS onto their GSM networks However the performance of these system is still under eval uation This paper presents a modelling frame work of GSM GPRS system with di erent parti tioning strategies using the Modelling Speci cation and Evaluation Language and package MOSEL The investigated scenarios compr...

We propose an auction-based pricing scheme for admission in a GPRS network, that could enhance the GPRS data service. Important features of our approach are the partitioning of dedicated channels for enhanced data service and the employment of an auction mechanism based on revenue-maximizing auctions (optimal auctions).

Industrial appliances do usually have RS232 ports to enable computer control and monitoring. In this paper we present a system to allow remote control by GSM/GPRS messaging not disturbing local link. To do so, the module must include a port arbiter to handle bi-directional communications between a RS232 and the two other ports (RS232 and GSM/GPRS).

The models of practice that general practice registrars (GPRs) envisage undertaking will affect workforce supply. The aim of this research was to determine practice intentions of current GPRs in a regional general practice training program (Coast City Country General Practice Training). Questionnaires were circulated to 220 GPRs undertaking general practice placements to determine characteristi...